From aeebe83b0a8fbfa39f84aa714855b61fc4bab043 Mon Sep 17 00:00:00 2001
From: Ian Moffett <ian@osmora.org>
Date: Wed, 19 Nov 2025 17:49:12 -0500
Subject: kern: proc: Add enhanced processor arbitration

Unlike the previouses systems where there was a global arbiter and a
shared lock, rv7 derives a zero-based processor index by using the lower
8 bits of the pid MOD the core count. This significantly reduces
contention.

Signed-off-by: Ian Moffett <ian@osmora.org>
---
 sys/inc/os/process.h | 2 ++
 1 file changed, 2 insertions(+)

(limited to 'sys/inc/os/process.h')

diff --git a/sys/inc/os/process.h b/sys/inc/os/process.h
index a2e3fdd..24db3e1 100644
--- a/sys/inc/os/process.h
+++ b/sys/inc/os/process.h
@@ -43,11 +43,13 @@
  * system
  *
  * @pid: Process ID
+ * @affinity: Processor affinity
  * @pcb: Process control block
  * @link: Queue link
  */
 struct process {
     pid_t pid;
+    id_t affinity;
     struct pcb pcb;
     TAILQ_ENTRY(process) link;
 };
-- 
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